Bolter, to nerf or to not nerf... that is the question

About this, I don’t say this is a bad idea.
However, I would really prefer something like increasing reload than what you propose.
In fact a slower reload would impact more the zealot, you’re right about this. But, the zealot should use it between two melee fights and also when things go bad.
And here, even with increasing reload they could do it.

But restricting moves, would impact badly veteran…

And I think, that’s my personal opinion, that, if we nerf the bolter (something I think is needed but a little), then the nerf should impact more zealots than veteran (i play both).
For the increase, I would say that they should 2-3 seconds that cannot be lowered even with a 80% reload modifier.