Should I rewrite classes in opencart 2.x for myself?

Question

opencart

Good afternoon!
Faced a problem. I completely rewrote the entire layout of opencart 2.1 for myself, and after adding the Simple modules and several others, I wondered if this would become a problem for me later. Do you think it makes sense to do so? Will this be a problem for me later when updating modules or the whole system (although it is unlikely that I will update it)?
I was also suggested to use OCMOD. How will it behave if I need to rewrite a part that was rewritten by another module after it. For example, I have a More tabs module on a product page. This module adds additional code snippets to product.tpl via OCMOD, how can I add my classes to it after the "Additional tabs" module code snippets have been added?

Answer 1

Will this be a problem for me later when updating modules or the whole system (although it is unlikely that I will update it)?

If you had no problems rewriting the layout for yourself, then fixing something after updating the modules should not be a problem.
I usually amend the module's OCMOD itself in this case. To make it more convenient to work with it, I install them not through the admin panel, but put them in the system folder