I ain't buying.
Romans 6:5 For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection:
Does that say we have been resurrected with him or we shall be resurrected as he was?
If by any means I might attain unto the resurrection of the dead. Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus. Phil 3:11,12
1 John 3:2 Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
Why is, he made alive, in italics in Eph 2:1? BTW I understand it is in verse 5. But it is in the context of Christ having been quickened and we having been given the Spirit of adoption, yet to receive, the adoption of Romans 8.
We are currently heirs of the hope of eternal life, not yet inheritors, having been given the Holy Spirit, Titus 3:7,6
For we are saved by hope: but hope that is seen is not hope: for what a man seeth, why doth he yet hope for? But if we hope for that we see not, then do we with patience wait for it.
We are not denying the resurrection of all the dead when Jesus returns in glory. We are considering the first resurrection. which I believe is conversion. Don't even think of "buying it."
Rev 20:4 And I saw thrones, and they sat on them, and judgment was committed to them. Then I saw the souls of those who had been beheaded for their witness to Jesus and for the word of God, who had not worshipped the beast or his image, and had not received his mark on their foreheads or on their hands. And they lived and reigned with Christ for a thousand years. 5 But the rest of the dead did not live again until the thousand years were finished. This is the first resurrection. 6 Blessed and holy is he who has part in the first resurrection. Over such the second death has no power, but they shall be priests of God and of Christ, and shall reign with Him a thousand years.
.....
14 Then Death and Hades were cast into the lake of fire. This is the second death. 15 And anyone not found written in the Book of Life was cast into the lake of fire.
Those blessed by the first resurrection will not suffer the second death. The second death is hell. Verse 6 describes our present status as believers as is clear from John's greeting in the opening chapter:
Rev. 1:4 John, to the seven churches which are in Asia
Grace to you and peace from Him who is and who was and who is to come, and from the seven Spirits who are before His throne, 5 and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler over the kings of the earth.
To Him who loved us and washed us from our sins in His own blood, 6 and has made us kings and priests to His God and Father, to Him be glory and dominion forever and ever. Amen.
Verse 5b is an allusion to baptism, as is the verse you cited - Romans 6:5:
1 What shall we say then? Shall we continue in sin that grace may abound? 2 Certainly not! How shall we who died to sin live any longer in it? 3 Or do you not know that as many of us as were baptized into Christ Jesus were baptized into His death? 4 Therefore we were buried with Him through baptism into death, that just as Christ was raised from the dead by the glory of the Father, even so we also should walk in newness of life.
5 For if we have been united together in the likeness of His death, certainly we also shall be in the likeness of His resurrection,
Baptism is a clear picture of spiritual death of our old sinful life, dead in sin, & resurrection to new spiritual life in Christ - a resurrection life BEFORE death. A life that assures us of eternal life, so that at the end of our natural life our souls continue to live in the presence of our Saviour in heaven.
In is also an assurance of our cleansing from sin by our Saviour's blood, & of our born again of the Spirit life, and so our son & heir status as children of God, with all the promises given to Abraham.
Gal. 3:26 For you are all sons of God through faith in Christ Jesus. 27 For as many of you as were baptized into Christ have put on Christ. 28 There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus. 29 And if you are Christ’s, then you are Abraham’s seed, and heirs according to the promise.
Read on in Galatians:
4:6 And because you are sons, God has sent forth the Spirit of His Son into your hearts, crying out, “Abba, Father!” 7 Therefore you are no longer a slave but a son, and if a son, then an heir of God through Christ.
I think you are missing out when you write:
"we having been given the Spirit of adoption, yet to receive, the adoption of Romans 8.
We are currently heirs of the hope of eternal life, not yet inheritors, having been given the Holy Spirit, Titus 3:7"
Of course we live in hope - a sure & steadfast hope -
Heb. 6:19 This hope we have as an anchor of the soul, both sure and steadfast, and which enters the Presence behind the veil
And now I preach -
Realise who you are as a born-again child of God, baptised into Christ by the Holy Spirit.
Your old sinful life is dead & buried - rise up & LIVE, knowing that all the promises of God are yours in Christ!
The Christian life is not a sort of unsure half-life - live in the hope that NOTHING can separate you from the love of God & all he has promised.