Deny rules in ACF?

Is it possible to set deny rules for ACF?

For example, I don't want to allow cellspacing and cellpadding attributes on tables but I want to keep other features of 'table' plugin.

I actually managed to achieve this by changing allowedContent property of plugins/table/plugin.js, but maybe there's a better way to do it without hacking core plugins? By setting denying rules (it it possible at all?) or using other methods.

Edit: found this ticket: http://dev.ckeditor.com/ticket/10276 , look's like it's impossible to set deny rules for now.