RM Skill: Undisclosed
I think I found a workaround, but it requires some bug fixing. In a nutshell, it involves using this script in conjunction with the Anti-Lag script which ceases processing of events far enough from the player, and making the trees, mountains, towns, towers etc event sprites. But I found the funniest bug ever: events that are not processed due to being far from player start moving with the player around him, like a box, when in Mode7. If this bug is fixed, it'll be possible to create some cool-looking Mode7 maps for VX.